open leaflet_flutter_example/lib/main.dart and paste the API key into the
additionalOptions map.

Offline maps

Follow this guide to grab offline tiles<br>
Once you have your map exported to .mbtiles, you can use mbtilesToPng to unpack into /{z}/{x}/{y}.png. Move this to Assets folder and add Asset directories to pubspec.yaml. Minimum required fields for offline maps are: